broken iphone?

Hi there I am writting in regards to my brothers iphone. We think it is broken and we are hoping someone here can help. It is a week 47 phone. First off, we are in Canada. OTB is was 1.1.2 so we jailbroke it, updated etc. and he was using a PSS chip with Rogers. Since xmas the phone was working perfect but then the other day something went wrong with the sound and there is NO sound other then when the phone rings he can hear it and he can still talk on speaker phone. No other sounds work. No sounds from the ipod work or from the phone......no unlocking sounds..no typing sounds...........nothing. But the speaker phone sounds work and the ring .....so we are confused. We tried restoring to its original state and went through the whole process again but no luck...same thing.....We are thinking he is out of luck and might need to send it back but we bought our iphone on a trip to Arizona at Xmas and we live in Canada...SInce the iphones are not even available in Canada do you think that Apple will even fix it for him?..........anyways....suggestions please we are bit confused. thanks in advance.

edit --- we just tried to listen to the ipod of the phone and other things with the headphones on and everything works with headphones.....so we are thniking something came loose inside where is connects to the speakers maybe??

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